hydro - Mesa Associates, Inc.

Vibration Data Directly Correlates to Generator Health Score Reduction

Vibration data from the Alert generated on March 4, 2023, shows the initiation of the defect, shown in the green box below. The vibration anomaly increased the amplitude on one of the vibration probes. For this machine, amplitudes below 6 Mils (0.006 inches displacement, peak-to-peak) are considered good. The Acceptable amplitude region is from 6 […]

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Anomaly Detection Engine (ADE) Alerts and Recommendations

The Anomaly Detection Engine (ADE) feeds its results to the Apparent Cause Engine (ACE), and based on factors that may include a Failure Modes and Effects Analysis (FMEA), Action Recommendations are generated. Limiting the ACE with FMEA increases the probability of an accurate diagnosis by the ACE. Remember, these are specifically built, intentional outputs for

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Generator Analytics Lead to Anomaly Score Highest Contributing Factors

RTDs provide temperature measurements and in the case for the image below, the air cooling (Out and In) are the two largest contributing factors impacting the Anomaly Score. The MVAR and TopOilTemp tags are the lowest of the top five relative contributors to the Anomaly Score. Alerts and Recommendations may be generated by clicking on

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Health Score Impact Factors

Health Score Impact Factors (anomalies) can appear at the facility, unit, hierarchy group, input, and custom Asset Management levels (in this case, Mesa designed a custom anomaly detection called ‘startup type’). For example, at the unit level, both the turbine and generator have reduced health scores (51%) in the image. Anomalies at the various hierarchical

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Machine Learning for Asset Health Tracking

Hydro Turbines are complex machines with multiple transient conditions at start-up. Advanced Pattern Recognition is key in determining the roles that load, net head, cooling water temperature, and air cooler fouling play in day-to-day operations. Calculating the Generator’s Asset Health Score (AHS) for trending helps users determine the overall asset’s health over time. In one

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Is your current maintenance schedule primarily time-based?

A good Asset Management program requires some time-based activities, such as filter changes and lubrication events. The challenge is in performing scheduled maintenance activities on time to keep a low-risk profile. Skipping or deferring maintenance items will increase problems over time. In Hydro Generation, if air cooler fouling is left untreated, daily operations can be

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Hadjerioua Discusses Mesa’s Newly Acquired Small Hydro Technology at 2024 NHA Hydropower Week

Dr. Boualem (Bo) Hadjerioua will be presenting on Mesa’s newly acquired small hydro technology at NHA Hydropower Week in Washington, D.C. during the “Water Power Innovation Showcase: Conventional Hydro and Marine Energy” session on Wednesday, March 13, from 10:30 AM – 11:30 AM in the Senate Room.

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Hadjerioua To Present Technical Paper at HYDROVISION 2024

The presentation will delve into the Tennessee Valley Authority’s (TVA) innovative technique of using surface water pumps to improve dissolved oxygen (DO) levels in turbine releases to meet the tailwater DO content’s limit requirements. Dr. Hadjerioua or one of his staff will present the findings from the proposed surface pumps.

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Buddy Lee Discusses, “Is Artificial Intelligence a Game Changer for Hydro”

In an interview with Hydro Leader Magazine, AI Subject Matter Expert Buddy Lee discusses how AI can help keep aging equipment in hydro facilities operating reliably while responding to grid demands.

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Boualem Hadjerioua Publishes Article In Hydro Review Magazine

Boualem (Bo) Hadjerioua, Director of Integrated Water Resources Management at Mesa Associates, Inc. (Mesa), with Madison Bowling and Dol Raj Chalise, recently published an article (March 15, 2023) in the magazine Hydro Review. In the article, they discuss the importance of developing new technologies for hydropower and suggest that the U.S. government, regulators, and power utilities

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